Merge 109263 - [chromium] Don't let invalidation for next frame prevent tile upload

Source/WebCore/platform/graphics/chromium/TiledLayerChromium.h

 /*
  * Copyright (C) 2011 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  *
  * 1.  Redistributions of source code must retain the above copyright
  *     notice, this list of conditions and the following disclaimer.
  * 2.  Redistributions in binary form must reproduce the above copyright
@@ skipping 63 matching lines @@
     void setTileSize(const IntSize&);
     void setTextureFormat(GC3Denum textureFormat) { m_textureFormat = textureFormat; }
     void setBorderTexelOption(CCLayerTilingData::BorderTexelOption);
 
     virtual void createTextureUpdater(const CCLayerTreeHost*) = 0;
     virtual LayerTextureUpdater* textureUpdater() const = 0;
 
     // Set invalidations to be potentially repainted during update().
     void invalidateRect(const IntRect& layerRect);
 
+    // Reset state on tiles that will be used for updating the layer.
+    void resetUpdateState();
+
     // Prepare data needed to update textures that intersect with layerRect.
     void prepareToUpdate(const IntRect& layerRect);
 
     // Same as above, but this will try to paint additional surrounding content if idle.
     void prepareToUpdateIdle(const IntRect& layerRect);
 
     // After preparing an update, returns true if more pre-painting is needed.
     bool needsIdlePaint(const IntRect& layerRect);
 
     bool skipsDraw() const { return m_skipsDraw; }
@@ skipping 29 matching lines @@
     LayerTextureUpdater::SampledTexelFormat m_sampledTexelFormat;
 
     TilingOption m_tilingOption;
     OwnPtr<CCLayerTilingData> m_tiler;
 };
 
 }
 #endif // USE(ACCELERATED_COMPOSITING)
 
 #endif